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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:26:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:26:00 +0000
commit830407e88f9d40d954356c3754f2647f91d5c06a (patch)
treed6a0ece6feea91f3c656166dbaa884ef8a29740e /scripts/gen-cdefs.sh
parentInitial commit. (diff)
downloadknot-resolver-830407e88f9d40d954356c3754f2647f91d5c06a.tar.xz
knot-resolver-830407e88f9d40d954356c3754f2647f91d5c06a.zip
Adding upstream version 5.6.0.upstream/5.6.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripts/gen-cdefs.sh')
-rwxr-xr-xscripts/gen-cdefs.sh82
1 files changed, 82 insertions, 0 deletions
diff --git a/scripts/gen-cdefs.sh b/scripts/gen-cdefs.sh
new file mode 100755
index 0000000..ddb0aa7
--- /dev/null
+++ b/scripts/gen-cdefs.sh
@@ -0,0 +1,82 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+set -o pipefail -o errexit
+
+if [ "$2" != types ] && [ "$2" != functions ]; then
+ echo "Usage: $0 libkres (types|functions)" >&2
+ echo " and input identifiers, one per line." >&2
+ echo " You need debug symbols in the library." >&2
+ echo
+ echo " If you call this on a type that's a typedef, it gets expanded." >&2
+ echo " To avoid that, prefix the identifier with 'typedef '." >&2
+ exit 1
+fi
+
+if ! command -v gdb >/dev/null; then
+ echo "Failed to find gdb" >&2
+ exit 1
+fi
+
+if ! command -v sed >/dev/null; then
+ echo "Failed to find GNU sed" >&2
+ exit 1
+fi
+
+if ! sed --version | head -1 | grep -q "GNU sed"; then
+ echo "GNU sed required to run this script" >&2
+fi
+
+# be very precise with the directories for libraries to not pick wrong library
+case "$1" in
+ libknot) library="$(PATH="$(pkg-config libknot --variable=libdir)" command -v "$1.so")" ;;
+ libzscanner) library="$(PATH="$(pkg-config libzscanner --variable=libdir)" command -v "$1.so")" ;;
+ *) library="$(command -v "$1")" # use absolute path to library
+esac
+
+if [ -z "$library" ]; then
+ echo "$1 not found. Note: only .so platforms work currently." >&2
+ exit 1
+fi
+
+# Let's use an array to hold command-line arguments, to simplify quoting.
+GDB=(gdb)
+GDB+=(-n -quiet -batch "-symbols=$library")
+GDB+=(-iex "set width unlimited" -iex "set max-value-size unlimited")
+
+grep -v '^#\|^$' | while read -r ident; do
+ if [ "$2" = functions ]; then
+ output="$("${GDB[@]}" --ex "info functions ^$ident\$" \
+ | sed '0,/^All functions/ d; /^File .*:$/ d')"
+ else # types
+ case "$ident" in
+ struct\ *|union\ *|enum\ *)
+ output="$("${GDB[@]}" --ex "ptype $ident" \
+ | sed '0,/^type = /s/^type = /\n/; $ s/$/;/')"
+ ;;
+ typedef\ *) # typedef that shouldn't be expanded
+ output="$("${GDB[@]}" --ex "info types ^"$(echo "$ident" | sed 's/^typedef //')"\$" \
+ | sed -e '0,/^File .*:$/ d' -e '/^File .*:$/,$ d')"
+ # we need to stop early to remove ^^ multiple matches
+ ;;
+ *) # we assume it's a typedef that should be expanded
+ output="$("${GDB[@]}" --ex "ptype $ident" \
+ | sed "0,/^type = /s/^type = /typedef /; $ s/$/ $ident;/")"
+ ;;
+ esac
+ fi
+ # LuaJIT FFI blows up on "uint" type
+ output="$(echo "$output" | sed 's/\buint\b/unsigned int/g')"
+ # GDB 8.2+ added source line prefix to output
+ output="$(echo "$output" | sed 's/^[0-9]\+:[[:space:]]*//g')"
+ # use tabs instead of spaces
+ output="$(echo "$output" | sed 's/ /\t/g')"
+
+ # abort on empty output
+ if [ -z "$(echo "$output" | tr -d "\n;")" ]; then
+ echo "Failed to find cdef of $ident" >&2
+ exit 1
+ fi
+ echo "$output" | grep -v '^$'
+done
+
+exit 0